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https://issues.apache.org/jira/browse/SPARK-8888?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Reynold Xin updated SPARK-8888:
-------------------------------
Fix Version/s: (was: 1.4.0)
> DynamicPartitionWriterContainer.outputWriterForRow is very inefficient
> ----------------------------------------------------------------------
>
> Key: SPARK-8888
> URL: https://issues.apache.org/jira/browse/SPARK-8888
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Reporter: Reynold Xin
>
> A few things:
> 1. We should use a java.util.HashMap, which is faster than Scala's map,
> although this one barely matters.
> 2. Don't use zip and scala collection methods to avoid garbage collection
> {code}
> val partitionPath = partitionColumns.zip(row.toSeq).map { case (col,
> rawValue) =>
> val string = if (rawValue == null) null else String.valueOf(rawValue)
> val valueString = if (string == null || string.isEmpty) {
> defaultPartitionName
> } else {
> PartitioningUtils.escapePathName(string)
> }
> s"/$col=$valueString"
> }.mkString.stripPrefix(Path.SEPARATOR)
> {code}
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